- Profession: Double bass player, teacher.
- Relation to Mahler: Teacher in Jihlava. See Music education Gustav Mahler in Jihlava.
- Correspondence with Mahler:
Information from Hollander.
Perhaps Sladky was a member of the orchestra of the Stadttheater (Komenskeho street Nos. 24/1357, Spital Gasse No. 4).
Franz Viktorin (1888) succeeded Sladky as Mahler's teacher.